A method for the cumulative carbon test of a pickup truck
By confirming the free acceleration smoke and the acceleration smoke at each gear on the pickup truck, combined with the test results of the engine mount, combined with the parking regeneration test and weighing measurement, the carbon cumulative test was carried out in urban areas, suburbs and high-speed operating conditions, until the DPF was full, the carbon cumulative curves under different operating conditions were drawn, which solved the problem of carbon cumulative test that is not suitable for pickup trucks in the existing technology, and achieved the effect of strong operability, simple data acquisition and convenient analysis.
Patent Information
- Application Number
- CN202210674481.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-06-14
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2042-06-14
AI Technical Summary
The existing carbon cumulative test methods are not suitable for pickup trucks and cannot effectively deal with the complex vehicle operating conditions of pickup trucks.
A pickup truck accumulation carbon test method is adopted to confirm the free acceleration smoke and the acceleration smoke of each gear, and combine the test results of the engine mount to ensure the consistency of the engine status. Then, through parking regeneration test and weighing measurement, the carbon cumulative test was carried out in urban areas, suburbs and high-speed operating conditions respectively, until the DPF was full, and the carbon cumulative curves under different operating conditions were drawn.
This method covers the characteristics of different uses of pickup trucks, is highly operable, can reduce the number of accumulated carbon tests in the whole vehicle, enhance the reference value of engine bench tests, and is simple to collect data and is easy to analyze.
Smart Images
Figure CN115165376B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of carbon accumulation tests, and more specifically, it relates to a method for carbon accumulation test of a pickup truck whole vehicle. Background Art
[0002] With the continuous development of society, motor vehicles have become an essential means of transportation for many families or companies. The number of motor vehicles is increasing, and the exhaust emissions are also increasing day by day. The problems caused by exhaust emissions seriously threaten environmental safety. The national regulations on motor vehicle emissions have been upgraded from National III to National VI. Especially for light vehicle emissions, National VI adopts a fuel-neutral standard, and gasoline and diesel engines adopt unified emission standards, which put forward higher requirements for the exhaust emissions of diesel engine whole vehicles.
[0003] In order to meet the strict emission requirements, a DPF device must be applied to the exhaust system. As the diesel engine continues to be used, the DPF device will cause the back pressure of the whole vehicle's exhaust system to rise due to the increasing amount of particulate matter trapped, resulting in the deterioration of the power performance and economy of the whole vehicle. Therefore, understanding the actual operating conditions of the motor vehicle whole vehicle will help to understand the source emission level of the diesel engine and the temperature distribution of each part of the after-treatment device, so as to effectively manage the temperature.
[0004] With the gradual lifting of the ban on pickups entering the city, pickups are increasingly widely used in commercial and passenger applications. The applications of pickups include: passenger transportation, cargo transportation, as well as in urban, suburban, highway, mountain road, etc. The operating conditions are very complex. In order to cope with the complex whole vehicle operating conditions, corresponding carbon accumulation test methods need to be formulated, and the existing carbon accumulation test methods are not suitable for pickup trucks. Summary of the Invention
[0005] The technical problem to be solved by the present invention is in view of the above-mentioned deficiencies of the prior art. The purpose of the present invention is to provide a method for carbon accumulation test suitable for a pickup truck whole vehicle.
[0006] The technical solution of the present invention is: a method for carbon accumulation test of a pickup truck whole vehicle, including:
[0007] Confirm the free acceleration smoke density and acceleration smoke density of each gear of the pickup truck whole vehicle, and compare the smoke density and time of the engine bench and the whole vehicle free acceleration to ensure that the engine state is consistent with the results on the bench;
[0008] Conduct a parked regeneration test on the pickup truck whole vehicle to clean the DPF and determine the initial DPF weight; under the condition of the pickup truck whole vehicle being unloaded, conduct urban operating conditions, weigh the DPF after driving to the first mileage and weigh the DPF after driving to the second mileage, determine the subsequent weighing interval mileage according to the results of these two weighings, until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded urban operating conditions according to the mileage of each driving and the weighing results of the DPF.
[0009] Conduct a parking regeneration test on the whole pickup truck to clean the DPF and determine the initial DPF weight; under the condition of the pickup truck being unloaded, conduct suburban driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded suburban driving conditions based on the mileage of each driving and the weighing results of the DPF.
[0010] Conduct a parking regeneration test on the whole pickup truck to clean the DPF and determine the initial DPF weight; under the condition of the pickup truck being unloaded, conduct highway driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded highway driving conditions based on the mileage of each driving and the weighing results of the DPF.
[0011] Conduct a parking regeneration test on the whole pickup truck to clean the DPF and determine the initial DPF weight; under the condition of the pickup truck being fully loaded, conduct urban driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the fully loaded urban driving conditions based on the mileage of each driving and the weighing results of the DPF.
[0012] Conduct a parking regeneration test on the whole pickup truck to clean the DPF and determine the initial DPF weight; under the condition of the pickup truck being fully loaded, conduct suburban driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the fully loaded suburban driving conditions based on the mileage of each driving and the weighing results of the DPF.
[0013] Conduct a parking regeneration test on the whole pickup truck to clean the DPF and determine the initial DPF weight; under the condition of the pickup truck being fully loaded, conduct highway driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the fully loaded highway driving conditions based on the mileage of each driving and the weighing results of the DPF.
[0014] As a further improvement, the requirements for free acceleration smoke density and acceleration smoke density of each gear are < 0.25 m -1 .
[0015] Further, when operating under urban conditions, the vehicle speed < 60 km / h.
[0016] Further, when operating under suburban conditions, 60 km / h ≤ vehicle speed ≤ 90 km / h.
[0017] Further, when operating under highway conditions, the vehicle speed > 90 km / h.
[0018] Further, the first mileage is 200 km.
[0019] Further, the second mileage is 400 km.
[0020] Further, the specific interval mileage for subsequent weighings is determined according to the results of these two weighings: a prediction curve is fitted based on the results of the two weighings, the mileage at the full-load state is predicted according to the prediction curve, and the mileage at the full-load state is evenly divided into 5 - 10 interval mileages.
[0021] Beneficial effects
[0022] Compared with the prior art, the advantages of the present invention are as follows:
[0023] The present invention covers the characteristics of different uses of pickups and has strong operability; a test method corresponding to the engine bench is created, which can reduce the number of carbon accumulation tests on the whole vehicle and enhance the reference value of the bench carbon accumulation test; the data collection is simple and the analysis is convenient. Description of the drawings
[0024] Figure 1 It is a test flow chart of the present invention. Detailed implementation manners
[0025] The present invention will be further described below with reference to specific embodiments in the drawings.
[0026] Refer to Figure 1 , a method for carbon accumulation test of a pickup truck whole vehicle, characterized by comprising:
[0027] Confirm the free acceleration smoke density and the acceleration smoke density of each gear of the pickup truck whole vehicle. The requirements for the free acceleration smoke density and the acceleration smoke density of each gear are < 0.25 m -1 , and compare the smoke density and time of the engine bench and the whole vehicle free acceleration to ensure that the engine state is consistent with the results on the bench, which can enhance the reference value of the bench carbon accumulation test;
[0028] Conduct a parking regeneration test on the whole pickup truck, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the whole pickup truck being unloaded, conduct urban driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded urban driving conditions based on the mileage of each drive and the weighing results of the DPF;
[0029] Conduct a parking regeneration test on the whole pickup truck, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the whole pickup truck being unloaded, conduct suburban driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded suburban driving conditions based on the mileage of each drive and the weighing results of the DPF;
[0030] Conduct a parking regeneration test on the whole pickup truck, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the whole pickup truck being unloaded, conduct highway driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded highway driving conditions based on the mileage of each drive and the weighing results of the DPF;
[0031] Conduct a parking regeneration test on the whole pickup truck, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the whole pickup truck being fully loaded, conduct urban driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the fully loaded urban driving conditions based on the mileage of each drive and the weighing results of the DPF;
[0032] Conduct a parking regeneration test on the whole pickup truck, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the whole pickup truck being fully loaded, conduct suburban driving conditions, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the fully loaded suburban driving conditions based on the mileage of each drive and the weighing results of the DPF;
[0033] A parking regeneration test is carried out on the pickup truck to regenerate the DPF and determine the initial DPF weight. When the pickup truck is fully loaded, it is operated at high speed and the DPF is weighed after the first mileage and the second mileage respectively. The interval mileage of subsequent weighings is determined based on the results of these two weighings until the increased weight of the DPF reaches the cumulative state. The full-load high-speed condition cumulative carbon curve is obtained based on the mileage of each trip and the DPF weighing results.
[0034] In this embodiment, when the vehicle is running in the urban area, the vehicle speed is less than 60 km / h, when the vehicle is running in the suburban area, the vehicle speed is 60 km / h≤vehicle speed≤90 km / h, and when the vehicle is running in the high-speed area, the vehicle speed is greater than 90 km / h. The first mileage is 200 km, and the second mileage is 400 km. Of course, the first mileage and the second mileage can also be other distance values.
[0035] The mileage intervals for subsequent weighings are determined based on the results of the two weighings as follows: a prediction curve is fitted based on the results of the two weighings, the mileage in the full state is predicted based on the prediction curve, and the mileage in the full state is divided into 5 to 10 intervals on average according to the predicted cumulative mileage, which can reduce the number of cumulative carbon tests for the whole vehicle.
[0036] The invention covers the characteristics of different uses of pickup trucks, has strong operability, creates a test method corresponding to an engine bench, and is simple to collect data and convenient to analyze.
[0037] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.
Claims
1. A method for the cumulative carbon test of a pickup truck as a whole, characterized in that, Including: Confirm the free acceleration smoke density and the acceleration smoke density of each gear of the pickup truck as a whole vehicle, and compare the smoke density and time of the engine bench and the free acceleration of the whole vehicle to ensure that the engine state is consistent with the results on the bench; Conduct a parking regeneration test on the pickup truck as a whole vehicle, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the pickup truck as a whole vehicle being unloaded, conduct an urban working condition operation, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded urban working condition according to the mileage of each driving and the weighing results of the DPF; Conduct a parking regeneration test on the pickup truck as a whole vehicle, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the pickup truck as a whole vehicle being unloaded, conduct a suburban working condition operation, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded suburban working condition according to the mileage of each driving and the weighing results of the DPF; Conduct a parking regeneration test on the pickup truck as a whole vehicle, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the pickup truck as a whole vehicle being unloaded, conduct a highway working condition operation, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the unloaded highway working condition according to the mileage of each driving and the weighing results of the DPF; Conduct a parking regeneration test on the pickup truck as a whole vehicle, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the pickup truck as a whole vehicle being fully loaded, conduct an urban working condition operation, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the fully loaded urban working condition according to the mileage of each driving and the weighing results of the DPF; Conduct a parking regeneration test on the pickup truck as a whole vehicle, regenerate the DPF until it is clean, and determine the initial DPF weight; under the condition of the pickup truck as a whole vehicle being fully loaded, conduct a suburban working condition operation, weigh the DPF after driving to the first mileage respectively, weigh the DPF after driving to the second mileage, determine the interval mileage for subsequent weighing according to the results of these two weighings until the increased weight of the DPF reaches the full state, and obtain the carbon accumulation curve of the fully loaded suburban working condition according to the mileage of each driving and the weighing results of the DPF; Carry out parking regeneration test on the pickup truck to regenerate the DPF and determine the initial DPF weight; when the pickup truck is fully loaded, run it at high speed, weigh the DPF after the first mileage and the second mileage, and determine the interval mileage of subsequent weighings according to the results of these two weighings, until the added weight of the DPF reaches the cumulative full state, and obtain the full-load high-speed condition cumulative carbon curve according to the mileage of each trip and the weighing results of the DPF; The interval mileage for subsequent weighings is determined based on the results of the two weighings as follows: a prediction curve is fitted based on the results of the two weighings, the mileage in the cumulative state is predicted based on the prediction curve, and the mileage in the predicted cumulative state is evenly divided into 5 to 10 interval mileages.
2. The method for the cumulative carbon test of a pickup truck as a whole according to claim 1, characterized in that, The requirements for free acceleration smoke density and acceleration smoke density at each gear are < 0.25 m -1 .
3. The method for the cumulative carbon test of a pickup truck as a whole according to claim 1, characterized in that, When operating in urban conditions, the vehicle speed is less than 60km / h.
4. The method for the cumulative carbon test of a pickup truck as a whole according to claim 1, characterized in that, When operating in suburban conditions, the vehicle speed should be 60km / h≤≤90km / h.
5. The method for the cumulative carbon test of a pickup truck as a whole according to claim 1, characterized in that, When operating at high speed, the vehicle speed is >90km / h.
6. The method for the cumulative carbon test of a pickup truck as a whole according to claim 1, characterized in that, The first mileage is 200km.
7. The method for the cumulative carbon test of a pickup truck as a whole according to claim 1, characterized in that, The second mileage is 400km.
Citation Information
Patent Citations
Loader whole vehicle carbon accumulation test method
CN114486272A